Memorial Day

To many Americans, Memorial Day means barbecues and the start of the summer season. But it's first and foremost a time to remember the men and women who have served our country, giving thanks to those who risk their lives everyday to protect ours.

Memorial Day is a time to pay tribute and remember those men and women who died while serving in our nation's armed forces. And just as families across the country today are honoring those who have served and made the greatest sacrifice, we are also reminded of those who are still in the trenches, both in war zones and here at home

PEOPLE's ongoing series Heroes Among Us profiles everyday Americans who are going the extra mile to help neighbors and strangers, and the seven amazing men highlighted below – all retired from, or affiliated with, the armed services – deserve another round of applause for their inspiring acts of kindness.

They're both just 23 years old, but they're two of the biggest names in electronic music – and Avicii and Zedd gave PEOPLE.com a sneak peek at what they'll be spinning during their turntable takeover in Las Vegas over Memorial Day weekend.

Kicking off one of the biggest party weekends of the year, Zedd (born Anton Zaslavski) will keep the music flowing on Friday, from 10:00 p.m. to 4:00 a.m. at Mandalay Bay's brand new nightclub, Light.

"It is an honor to be the one to play for the opening of this club which will hopefully change a whole city," the Clarity producer tells PEOPLE. "We've been working on the concept for my show for so long now and tweaking our visuals and lots of performance aspects. I obviously can't say too much about it yet, but it will be a very unique thing in Vegas and in the whole world."